Moth-repellent animal fiber



Patented May 13, 1924.. l,

cum-. sures SAMUEL A. TURNER, OI BROOKLYN, NEW. YDBK, ASSIG-NOB 'I'O PATH cannon. COMPANY, OF BROOKLYN, NEW YORK, CORPORATION OF DELAWARE.

morn-annular ANIMAL rnann.

no Drawing.

a citizen of the-United States, residing at.

Brooklyn, county of Kings, city of New York, and State of New York, have invented newv and useful Improvements in Moth-Reellent 'Animal Fibers, of which the folowing is a full, clear, and exact specification.

My invention relates to a process 101' treating textile fibers and refers particularly to processes for treating aal fibers and fabrics, in order to render them immune a ainst the attacks or certain insects and to t e fibers and fabrics thus reduced.

It is well known that animal fi ers, such as wool, are subject to attacks from various insects and are particularly liable to be eaten and destroyed by moths.

Various methods are employed for the prevention of such devastating actions, but

' they are generally only temporary in char actor and ineffective in resu ts.

It has long been recognized that itis hi hly desirable that the animal fibers and fa rics should themselves possess the proerty of repelling such attacks without to necessity of em loyment of repeated protective means at intermittent periods oi time when the fibers or fabrics are notin. actual use.

Attempts have therefore been made to inco orate within the fibers some means for their protection against such insect devastation which .will be lasti in character, not removed du the or inary process of fiber use and w ich will not-afiect the desirable pro erties of thefiber.

It is evi ent from a consideration or the various animal fibers, their numerous and widely difierent properties and the many err uses to which they are applied, that the a reduction of an insect repellent animal ber of considerable permanency is dificult of accomplishment.

The process of my invention presents a means of accomplishing these desirable results, producing an insect re ellent If imadl which is not afiected the ordinary u to which the fiber or f brid produced therefrom is applied. My process also u visa-me: the valuable propierties of being economic and of easy cation without the employmentof exof the life Application filed June 15, 1923. serial No. 645,895.

and dried have the pro erty of being immune from the attacks 0 moths in all stages growth of such insects and that this valuab e property is obtained without sacrificin an of the inherent characteristics of t e fi r.

I have found in general way that compounds suitable for the described purposes may be produced by the interaction .of salts of the sulphonic acid of na hthalene, especially the metallic salts o the mono-sulphonic acids,,sulphates, especiall the metallic sulphates, and compounds 0 fluorine.

Among the compounds which I have found particularly adaptable to my rooess are the aluminium and zinc salts o naphthalene-alpha-mono-sulphonic acid and napththalene-beta-mono-sulphonic acid; aluminium and zinc sulphates; and the duorides of aluminium, zinc, sodium, potassium and ammonium, although in invention is not limited to the particu ar mentioned compounds, as others may be substituted therefor.

In a general way, the application of my wool-proofing compounds consists'in treatoFFic-E ing the well cleansed wool with formic acid and then treating it with a solution of my I add preferably. slowl 56 parts by weight zn b,,.7I-I,o and stir at a gentle boil unt1l it is dissolved. I then of zinc sulphate add 24 :0 arts byweight of ammonium fluoride 7 5 ,FI) and maintain the boiling tem erature. until 't is dissolved. The

liquid is then filter eva orated to dryness and rground,. -'ipr'e feraby into a very treate fine wder. Aqueous solutions of the zinc sulplii te and aluminium fluoride ma be substituted for the solids mentioned a ove.

The resulting compounds from the above exam 1e process may be applied to the wool as fo lows The wool is thoroughly cleansed, as, for example, by scouring with otassium carbonate and ammonia at for one hour and then well rinsed, and is then worked for one-half hour in a solution containing 10% of formic acid 85% estimated upon the wei ht of. the wool. The thus treated wool is t en introduced into an aqueous solution containing 20% of the above example compounds estimated upon the weight of the wool and worked therein for two hours at a tem erature of 25 C. to 30 C. The wool is then removed, well rinsed with water and dried at about C.

Both the formic acid bath and the'wool resistant compounds bath may be employed for future wool treatments, in which event 2'}% formic acid 85%, estimated upon the weight of the wool and 2}% W001 resistant compounds estimatedupon-the weight of the woo may be added to the respectlve baths.

While I have employed formic acid in the above example, this particular acid is not essential to t e production of my treated fibers and it may bereplaced by any other suitable acid.

I do not limit myself to the particular chemicals, amounts, temperatures, times of treatment, or steps of process described above, as these are given simply as a means for clearl describing my invention.

What claim is 1. An insect re ellent animal fiber having incorporated t erein the products resulting from the aqueous interaction of a salt of naphthalene sulphonic acid, a sulphate and a metallic fluoride.

2. An insect'repellent animal fiber havof naphthalene sulphonic acid, a sulphate and a uminium fluoride.

5. An insect repellent animal fiber having incorporated therein the products resulting from the aqueous inter-action of a salt of naphthalene sulphonic acid, zinc sulphate and a metallic fluoride.

6. An insect repellent animal fiber -hav' I ing incorporated therein the products resulting from the aqueous inter-action of a salt of naphthalene sulphonic acid, zinc sulphate and aluminium fluoride.

7. An insect re ellent animal fiber having incorporated t erein the products resulting from the aqueous inter-action of a metallic salt of naphthalene sulphonic acid, zinc sulphate and a metallic fluoride.

8. An insect repellent animal fiber having incorporated therein the products result ing from the a ueous inter-action of a metallic salt of nap thalene sulphonic acid, zinc sulphate and aluminium fluoride.

9. An insect repellent animal fiber having incorporated therein the products result-. in from the aqueous inter-action of zinc sail; of na hthalene sulphonic acid, zinc sulphate an aluminium fluoride.

Si ed at New York city, in the county of New ork and State of New York, this 14th day of June, 1923.

SAMUEL A. TURNER. 

